Coating knowledge: how to distinguish exterior wall coating in rural housing renovation?

Core tip: the economic development has brought the improvement of people's living standards With the support of the state for rural policies and the rapid development of agricultural science and technology, the living standards in rural areas have been greatly improved Each household has also raised the requirements for the daily living environment, and the rural houses have also been improved From the past loess houses turned into brick houses, the external strength has also been coated Painting treatment So how to distinguish the exterior wall coating? In the new era of rural housing, the beautiful exterior wall coating is in accordance with the national standard GB / t9755-2001, which is divided into qualified products, first-class products and excellent products, but the most important of more than ten indicators (different exterior wall coatings Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and coating Home news: the economic development has brought the improvement of people's living standards With the support of the country's rural policies and the rapid development of agricultural science and technology, the living standards in rural areas have been greatly improved Each household has also raised its requirements for the daily living environment, and the rural houses have also been improved From the past loess houses turned into brick houses, the external strength has also been coated with powder Brush treatment So how to distinguish the exterior wall coating? In the new era of rural housing, the beautiful exterior wall coating implements the national standard GB / t9755-2001, which is divided into qualified products, first-class products and excellent products But the most important indicators (product differences produced by different exterior wall coating manufacturers) are: 1 Aging resistance; 2 Washability and water resistance; 3 Contrast rate (i.e covering power) Of course, users prefer to distinguish the merits and demerits of exterior wall coating with simple methods: (1) two pieces of glass or ceramic tile will be resistant to aging Put them side by side Brush different paints (a, B, c) on the top After drying for 1 hour, put one piece of glass in an oven at 200oC and bake for 2 hours Then take it out for cooling and compare the yellowing The serious yellowing indicates poor quality and aging resistance Generally speaking, the anti - yellowing properties of silicon - acrylic and pure - acrylic are better than that of styrene - acrylic paint, and styrene - acrylic paint is better than that of vinegar - acrylic paint and common paint ② Even if it is from different manufacturers, there will be some differences in yellowing, which is the difference in formula technology (2) Washability and water resistance ① from the outside of the brush sample: the washability of the gloss paint is greater than that of the matte paint, so the high-grade exterior wall paint is generally semi matte (or eggshell light), (the gloss paint can not be widely used due to the large reflection, high requirements for construction flatness and aesthetic reasons) The washability of varnish is generally more than 2000 times, some even more than 20000 times So it's hard to compare the difference between high gloss paints with brush ② Comparison of water resistance of glossy or semi matte paint: paint film can be brushed (evenly applied) on the glass, after drying, it can be immersed in clear water for comparison, and the degree of blistering, peeling and falling off can be observed The more bubbles, the faster the water resistance ③ The same is the difference between the two kinds of matte paint, the water resistance can also be different: A spray the two kinds of paint film with clear water, the one without change is better; the one with wet hair and dark hair is not good, which is the middle and low grade paint; the one with soft and damp hair is the worst, which may be unqualified b Use nails to carve two kinds of dry paint film, hard quality is good, resin binder is much, water resistance is excellent; soft is poor, cost is low [focus on WeChat official account "paint net"; pay attention to surprises, scan code to see if your husband is selling paint.. 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